Question: Who is the child of Agamemnon and the mother of Clytemnestra?
Paraphrase: Who is the kid of Agamemnon and Clytemnestra's mother?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q128176 p:P40 ?s . ?s ps:P40 ?obj . ?s pq:P25 wd:Q131157 }